First of all, no the SI's i have raced had only small mods like an Exhuast system or intake. Mine a has i/h/e. But those don add much. You guys do know that the SI only beats the EX by one tiny little second in the 0-60 and quarter mile right.(with an excellent driver) WOW!! A whole f***ing second! Is that worth a thousand dollar engine swap so i can put that little one second better engine in my car? No!.
Here are the facts.
1999 Civic EX: Hp: 127 Tourqe:107
0-60: 8.2 seconds. 16.4 quarter mile.
1999 Civic SI: Hp: 160 Torque: 114
0-60: 7.3 seconds. 15.3 quarter mile.
Those are the average cold hard facts, and all you SI owners think your bad as s**t. The fact is that both cars are heavy as f**k and could never beat any other civic besides the non VTEC ones or heavier ones.
Oh and by the way: the ex facts up there are with an auto tranny EX and five speed SI. Which is another question for you guys. Why do you think that five speeds are always faster than automatics??? The car downshifts for you in an automatic and always redlines when it shifts. Give me the real reason a five speed is faster, or said to be. Then i will go kill myself because all this time, i have been beating SI's by car lengths, and if i had a five speed, i couldnt imagine what i could do.